LM78S40CN DIP-16

The LM78S40 is a monolithic regulator subsystem consisting of all the active building blocks necessary for switching regu-lator systems. The device consists of a temperature com-pensated voltage reference, a duty-cycle controlled oscilla-tor with an active current limit circuit, an error amplifier, high current, high voltage output switch, a power diode and an uncommitted operational amplifier. The device can drive external NPN or PNP transistors when currents in excess of 1.5A or voltages in excess of 40V are required. The device can be used for step-down, step-up or inverting switching regulators as well as for series pass regulators. It features a wide supply voltage range, low standby power dissipation,high efficiency and low drift. It is useful for any stand-alone,low part count switching system and works extremely well in battery operated systems